ignore hosts

Anthony R Fletcher arif at mail.nih.gov
Fri Dec 9 20:02:21 UTC 2011

We run a non-authoritative DHCP server, version 4.2.1, on a network
handing out IP addresses to certain hosts and we want to simply ignore
(and not log) the rest. My config file looks like:

# Subnet setup.
subnet netmask
        option routers;
        option broadcast-address;
        option subnet-mask;

	host host1 {
		hardware ethernet 00:88:aa:43:00:8d;
		fixed-address host1; }
	#..... many others ....

However we get lots of logs like

Dec  9 14:36:55 master dhcpd: DHCPDISCOVER from 00:22:44:d9:cd:e0 via eth0: network no free leases

How can I not log these messages for certain MACs or all unknown MACs?

I've tried a bunch of things like "deny unknown-clients;" but the hosts
just try again, often, and we log them every time.


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